week 3 exercises added

exercises/week3/stl/starting_point/CMakeLists.txt

+cmake_minimum_required(VERSION 2.6)
+
+add_executable(main main.cc)
+# add_executable(memory_first memory_first.cc)
+# add_executable(memory_second memory_second.cc)
+# add_executable(memory_third memory_third.cc)

exercises/week3/stl/starting_point/main.cc

+#include <cstdlib>
+#include <string>
+#include <vector>
+#include <algorithm>
+#include <cmath>
+#include <fstream>
+#include <iomanip>
+#include <iostream>
+/* -------------------------------------------------------------------------- */
+
+int main(int argc, char ** argv){
+
+
+
+  return EXIT_SUCCESS;
+}
+
+
+

exercises/week3/stl/starting_point/memory_first.cc

+#include <vector>
+#include <array>
+#include <memory>
+#include <iostream>
+
+int main() {
+  int values;
+
+  for (int& v : values)
+    v = 0;
+
+  for (int i = 0; i < 10; ++i)
+    std::cout << values[i] << " ";
+  std::cout << std::endl;
+  return 0;
+}

exercises/week3/stl/starting_point/memory_second.cc

+#include <vector>
+#include <array>
+#include <memory>
+#include <iostream>
+
+std::vector<int>* stack_allocation(int n) {
+  return nullptr;
+}
+
+std::vector<int>* heap_allocation(int n) {
+  return nullptr;
+}
+
+int main() {
+  std::vector<int> * stack_values = stack_allocation(10);
+  std::vector<int> * heap_values = heap_allocation(10);
+
+  std::cout << stack_values->size() << ", " << heap_values->size() << std::endl;
+  return 0;
+}

exercises/week3/stl/starting_point/memory_third.cc

+#include <vector>
+#include <array>
+#include <memory>
+#include <iostream>
+
+
+int main() {
+  auto unique = std::make_unique<std::vector<int>>(10);
+
+  std::unique_ptr<std::vector<int>> other = nullptr;
+  other = unique;
+}